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Freeze dryer uses the principle of ice crystal sublimation to freeze water-containing materials below the freezing point, so that water is converted into ice and ice is converted into steam to achieve the drying effect.
There are many kinds of freeze dryers , and they can be classified into different categories according to different operating pressure, operation methods, heat transfer principles, heating methods, and construction.
Freeze dryer is a special kind of drying method, and the heat consumption is less than other drying methods. Under a high vacuum, the moisture of frozen material is directly changed from ice to steam without going through the process of melting ice into water.
A freeze dryer is used to dry antibiotics, vegetables, and fruits, etc. The process includes 3 stages freezing, sublimation, and re-drying.
Firstly, the materials to be freeze-dried are cooled by suitable cooling equipment, and then placed in the freeze-drying oven. Rapidly pass refrigerant to freeze the material, so that the product is completely frozen and can be sublimated. The sublimated water vapor is formed into ice crystals in the condenser, and the water removed in the re-drying stage is combined with water.
Toption has technical experience in freeze dryer manufacturing, a professional technical team to provide customized services for customers, from product production to after-sales installation, and the whole process service by the Toption team to help you, welcome to consult info@toptionlab.com to contact us.
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